Finland Government Has Admitted the Failure of Finland Education
note.com
note.com
Long sums and multiplications are probably not very useful now, but approximated calculations are, at least as a sanity check. [Yesterday in a shop they tried to charge me x10 by mistake. They realized the error and fixed it before pressing [enter] in the credit card device. I'd not notice a 1% error, but a x10 error should be obvious.]
The problem with approximated calculations is that they are very difficult to teach and learn. In spite what some new fads in educations say, you must do first many exact calculations by hand before you can understand how to approximate.
Anyway, without a good literacy and numeracy, it's difficult to get good medical doctors or engineers or other high paying jobs.